Tried quite a lot of them.

Sotis is not too bad.
You'll get used to it after a few games.
But it is not recommended to be played on NA.
A bit too laggy.

Colonial Line Wars is good.

Nexus Wars is good.
Same problem with you at end game.
Too much units lag the pc.

Runling Run.
This is quite fun also.
Can level up your runner and save it.
But can get a bit repetitive.

NOTD.
Another game that can save also.
But it is kinda short.
Can get quite boring.

Infested Arena.
Loved this game for a while.
Got bored of it later.

Hell TD and Round TD is nice.
Just a bit too easy if everyone choose only normal and easy setting.

Can't remember the rest at the moment.

Oh yea. I tried phantom mode too.
Got owned by the phantoms as one guy keep saying that he is phantom but he is actually a slayer.
So by the time we realize it, it is already too late to stop them.

We download it directly from battle.net.
It is not possible to get it outside of battle.net as the system have been changed and you can no longer put maps in a folder as the maps are now stored in the battle.net cache itself.

Another game you all should check out:

Nexus Word Wars.
It just became the top map in NA Servers.

Basically its 3v3.
You choose a side to join.
Then after that you basically keep typing words to make sure your nexus don't get destroyed.
There are math problems to do also.
And when you farm enough money you summon units to kill your opponent nexus.

Kinda fun but don't know how long is this game going to last.

In addition, it keeps your numbers of wins too.